Concealed antisiphon lavatory and sink trap



J. F. CHURCH CONCEALED ANTISIPHON LAVATORY AND SINK TRAP Filed Aug. 16,1934 Set. 24, W35.

Patented Sept. 24, 1935 UNITED STATES PATENT OFFICE CONCEALED ANTISIPHONLAVATORY AND SINK TRAP 1 Claim.

This invention relates to a novel trap for use in connection with theoutlet of sinks and lavatories enabling installation in a wall, wherebyit is concealed, and the space beneath the sink or lavatory is leftsubstantially unobstructed so that it may in particular accommodate aradiator, with the sink or lavatory coacting therewith to prevent therise of heat and insure its radiation laterally.

It is further aimed to provide a novel construction capable ofmanufacture for the most part, in a single piece, and with a minimumnumber of connections, the fitting also for the most part being capableof manufacture and use without requiring a finish or polish.

The more specific objects and advantages will become apparent from aconsideration of the description following taken in connection withaccompanying drawing illustrating an operative embodiment.

In said drawing:-

Figure 1 is a view partly in elevation and partly in section showing theimprovement used in connection with a sink or lavatory;

Figure 2 is an enlarged side elevation of the trap;

Figure 3 is an enlarged side elevation of the trap, reverse to Figure 2,and

Figure 4. is a vertical sectional view taken on the line 4-4 of Figure2.

Referring specifically to the drawing, Ill designates a conventionalsink, lavatory, or the like, and H a vertical wall to which it isfastened. The drain or outlet pipe from the element II) is shown at I2.

The improved trap constituting my invention is generally designated I 3.Such trap is disposed within the wall I I, having an inlet nipple orconnection at I4, suitably screw-threaded, like the pipe I 2, so that anut l5, suitably packed may connect such parts.

Said fitting I4 is one end of a vertical pipe [6 which communicates atits base with the lower end of a chamber [1, and which chamber at itsupper end communicates with an outlet pipe l8, suitably screw-threadedat l9, so that by means of a nut or otherwise at 20, it may be connectedto drain pipe 2| leading to the sewer.

In the front, lower portion of the chamber I 1, a boss 22 is providedwhich is normally closed by a plug or cap 23 screw-threaded therein asat 24. The parts l4, l6, l1, l8, and 22 are preferably in a single pieceso that they may be manufactured at minimum cost. The only elementsexposed are the nut l5 and the cap 23. If desired, such exposed elementsI5'and 23 may be nickle-plated or 10 otherwise polished or finished. Theremainder of the device, however, being concealed, may be used in therough, that is, without polishing or finishing. The one piececonstruction greatly minimizes the danger of leaks, and enables morerapid 15 installation.

The device constructed as described, will not siphon when used in asystem which is not vented.

It will be realized that practically all of the space beneath the sinkor lavatory I9 is rendered 20 available for use, by reason of theinvention. Such space particularly accommodates a radiator or a heatingsystem and the sink or lavatory prevents the rising of heat and on thecontrary serves to cause the same to be laterally radiated. 25

Various changes may be resorted to provided they fall within the spiritand scope of the invention.

I claim as my invention:

A trap of the class described adapted to be 30 located in a wall havinga chamber member, an inlet pipe for said chamber member communicatingtherewith adjacent the base of the chamber member, an outlet pipe forsaid chamber member communicating therewith at substan- 35 tially thetop of the chamber member, said inlet pipe having a portion extendingforwardly for connection to a drain from a sink or the like, saidchamber having a drain plug device extending forwardly therefromadjacent its base, said inlet 40 pipe and drain plug device opening insubstantially the same plane at the front of the trap, said parts beingin one piece, and external screwthreads on the terminals of each of saidpipes.

45 JAMES F. CHURCH.

